Guard for circular saws.



W. B. GARDINER. GUARD FOR CIRCULAR SAWS. APPLICATION mum APR.10, 191a.

Patented M21113, 1914.

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WARREN B. GARDINER, OF SAYLESVILLE, RHODE ISLAND.

GUARD FOR CIRCULAR SAWS.

To all whom it may concern:

Be it known that I, l/VARREN B. GARDI- NER, a citizen of the UnitedStates, residing at Saylesville, in the county of Providence and Stateof Rhode Island, have invented certain new and useful Improvements inGuards for Circular Saws, of which the following is a specification.

My invention relates to saw-guards, and it consists in the constructionand arrangement of its parts, as hereinafter set forth and claimed.

The primary object of my invention is to provide safety guard meansdevised to prevent the operators of circular saws from injury.

A. further object of the invention is to provide the guard withsupporting means whereby it (the guard) can be readily adjusted invertical and horizontal planes, as desired; the device as a wholeadapted to be detachably secured to the saw-frame or table.

In saw-guard devices as usually constructed the supporting meanstherefor permit of vertical movement only.

In the saw-guard and mounting means forming the subject of thisapplication for patent the guide may be adjusted to any practical heightabove the table, and, when in use, moves up and down automatically inunison with the Work or stock being acted upon by the saw; the guard maybe adjusted to allow a clearance of some two feet or more at the rear ofthe saw without demounting the guard; the latter may be.

moved on its support to the extreme right and left to the outer edges ofthe table longitudinally; in the event of running the stock endwise overthe saw the guard and its holder may be readily moved back out of theway; in case the saw binds in the stock, the act of raising or freeingthe latter causes the guard to move freely with it; and the presence ofthe guard and its supporting members do not prevent a practically clearview of the saw and stock at all times.

In the accompanying drawings, Figure 1 is a perspective view of acircular-saw-machine having my improved adjustably mounted guard-deviceattached thereto, and Fig. 2 represents a cross-section taken throughthe supporting tie-bar having a cross-head movably mounted thereon forcarrying the guard.

Again referring to the drawing, .A desig- Speeification of LettersPatent.

Application filed April 10, 1913.

Patented Mar. 3, 1914.

Serial No. 760,108.

nates a circular-sawanachine of usual construction, having a frame a,table 6, and

.circularsaw s.

The following description relates more particularly to the saw-guardproper c and means for adj ustably mounting it in a crosshead Badjustably slidable on a movable upper tie or bar E clamped to a pair ofstationary oppositely disposed metal side brackets Z) detachably securedto the rear portion of the saw-table t. Each bracket member 6, ofsuitable height, is provided with a base 6 whereby the bracket isadapted to be attached to the outer edges of the table. The upperportion of the bracket is provided with a forwardly extending arm bhaving its top surface machined off true and disposed parallel with theface of the table.

E designates a pair of laterally separated tie-bars extendinglongitudinally of the table. The ends of the bars are fixed in metalheads 0 adjustably secured to the respective arms 6 of said brackets bysuitable holding or clamping means, as for example, by set-screws (Z. Asthus constructed, the bars are adapted to move as one. A crossheadmember B is slidably supported on said tie-bars and is capable oflateral movement (right and left) thereon. A screw 7, or other zmalogousmeans, may be employed to maintain the cross-head in its adjustedpositions. The eross-head is constructed to support and carry achambered safetyguard c, the latter when in use being adapted to incaseand protect the upper portion of a mounted circular-saw. The upper partof the guards frame is fixed to a vertical red It freely movable endwisein upper and lower bearings a therefor formed in the cross-head. Inorder to prevent the rod from turning on its longitudinal axis it may beprovided with a groove y into which a pin i fixed in the bearing 72extends. A movable collar m adjustably secured to the rod /L by aset-screw m provides means whereby the guard may be vertically adjustedwith relation to the top of the sawtable If, as desired.

In normal use the guard member is adapted to rest freely upon and besupported by the upper side of the work or wooden stock then being actedupon by the circular saw. The lower side of the guard may be pro videdwith anti-friction wheels '20. The upper bearing of the cross headserves, in connection with the adjusted collar m, to form a stop forlimiting the downward movement of the guard.

The table t is adapted to be used in con nection with saws varying inkind; that is to say, a cutting-off saw may be mounted to extend upwardthrough a slot 8 in the table, and another slot s parallel with theother slot, cut in the table for a splitting-saw;

one of the saws being positioned for service,

while the other may be disposed tempo rarily below the table. Thecross-head car rying the guard is adapted to be readily moved to theright or left, as desired, so as to practically incase and protect theworking saw.

I claim as my invention:

The herein described combined frame and guard for circular saw machines,the same comprising a pair of bracket or frame members arranged to beremovably attached to the table of a circular saw machine, a horizontally disposed cross-head adjustably mounted on said brackets, aguard proper constructed to protect the upper portion of the peripheryand sides of the saw, a vertically disposed bar having the guardsuspended therefrom, and means connected with said bar and cross-headfor changing the position of the guard in lateral and verticaldirections relatively to the cross head.

In testimony whereof I have aflixed my @cyiea of $1115 patent may beobtained for five cents each, by addressing the Commissioner of Patents,Washington, D. C.

